Forging machine



Sept. -13, 1921.

F. A. HALLECK FORGING MACHINE Filed 's 9, 192 2 sheets-sha 1 F. A. HALLECK FORGING MACHINE Fild'Sept. 1924 2 Sheets-Sheet 2 Patented Sept. 13, 1927.

VIUN'ITED, STATES 'PATENTIOFFICE.

FRANK A, HALLECK, OF MICHIGAN CITY, INDIANA, ASSIGNOR Tb'SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

FORGING MACHINE.

Original application filed m 30, 1920, Serial. No. 400,121. Dividedand this application filed September I 9, 1924. Serial No. 736,794.

This invention relates to forging machines. It has for its object to provide an 1mproved forging machine. A further object is to provide improved controlling means for several of the elements comprislngfa forging machine such as swaging and upsetting mechanisms and clamping mechanism. More specifically, the object of the invention is to provide improved means whereby the upsetting mechanism will be rendered inoperative until the clamping mechanism is in full closed position, thus avoiding danger to the operator due to the fact that'the upsetting mechanism which comprisesa pneumatic hammer might drive a work piece outwardly from the clampingmechanism before the piece is securely held. .i

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice.

In these drawings, V

Fig. 1 is a side elevation of a forging machine with the controlling lever cover re moved.

Fig. 2 is a'vertical longitudinal section through the distributing valve.

Fig. 3 is a longitudinal section on line 3-3 of Fig. 1.

Fig. 4 is an enlarged partial sectional view of the improved foot control valve for the swaging motor.

In the illustrative embodiment of my invention I have shown the same incorporated in a usual type of drill sharpening machine comprising a base 1 having a swaging motor 2, clamping mechanism 3, and upsetting mechanism 4. In my copending application, Serial No. 400,121, filed July 30, 1920, of which this application is a division, the swaging mechanism 2 is offset from the longitudinal axis of the upsetting mechanism 4 so that when a drill steel, which this machine is particularly adapted to work upon -1s clamped by the mechanism 3 no particular harm would be done in case the swaging mechanism 2 should accidentally be operated. My present invention is directed more specifically to means for insuring operationof the clamping mechanism 3 before operation 7 of the upsetting mechanism 4. AJfluid operated piston type motor, generally indicated at 5, isadapted to actuate the clamping mechanism 3 as by suitable means including rods6. In my improved mechanism the base or frame 1 is provided adjacent the rear end of one. side thereof with a supply chest en-i erally indicated at 7 and to this chest 9, ive fluid, preferably compressed air, connection 8'is led. The lower portion of the live fluid chest is provided with an oil pocket 9 and air in passing to a valve chest 10 blows over the top of the oil and entrains a small'por-,

tion thereof, thereby assisting in the supply of IUbIICaIItTO any of the desired wor ing .parts. Within the valve chest 10 which communicates by means of a passage 11, see Fig.

'2, with the fluid pressure supply chest 7, is

arranged a valve 12 which is generally rectangular in shape and which is further rovided with a U-shaped therethrough, and opening at the lower face thereof, that is, the, face adjacent the valve seat. ,This valve is reciprocable across a valve seat 14 in which are formed a series'of ports 15, 16, 17 and 18, these ports leadin respectively to the foot valve, later describe and to. the clamping motor, the dolly actuating motor, and to. the exhaust. The exhaust passage leads directly to a chamber formed in the interior of the frame which constitutes:

a suitable exhaust reservoir. With the parts in the position shownin Fig. 3 the clamping mechanism is connected with the exhaust, the

horizontal hammer or dolly hammer supply assage 13 exten ing,

the upper chamber communicating directly 1 by the pipe 23 with the cylinderof the clamping motor and the lower chamber which is normally kept-from communication with the liveair by the valve 24, seated upon the valve seat 22, is provided with a connection 25 which connects with a suitable pipe lead ing to the valve chest of the vertical motor. The foot valve 24 is operated by a treadle 26 which is pivoted at 27 to the frame and operates a valve stem 28 of the foot valve 24. To prevent accidental operation of the treadle 26, I have provided, an inverted U- shaped shield 29 covering the treadle 26 and supported by the bracket 30 projecting from the side of frame 1.

To operate the valve 12, I employ a valve stem 31 which is actuated by a bell crank lever 32 provided with an operating handle 33 projecting to the front and one side of the frame 1 and also provided with a depending arm 34 adapted to cooperate with a vertical stop member 35 secured to the lower crosshead 36 of the clamp mechanism. It is to be noted that the crosshead 36 is secured to the lower ends of the vertical rods upon the upper ends of which is mounted the movable member of the clamping mechanism 3 and that the connection between the clamping mechanism and the motor 5 is through suitable toggle links, one end of which is connected to the crosshead 36. Inasmuch as the detailed structure of all the several mechanisms is disclosed in my copending application, it is not thought neces sary to go into detail here inasmuch as the present invention merely relates to the con trolling means :for said mechanisms.

In view of what may be called first position, the valve 12 ;is in approximately the position shown in Fig. 3 and maintains both ports 16 and 17 closed, that is, both the clamp operatingand the dolly motor controlling connections are closed to the live fluid. WVhen the valve is in this position, the lever 33 is raised considerably from the position disclosed and the lever 34 is at an equal distance on the opposite side of the vertical member 35 from that which it now occupies tothe rear of that lever. It will be further noted that 'with the parts in that position, the clamp mechanism is in open position, the pistons thereof being at the extreme left hand ends of their cylinders and the clamp raised as high as possible. Accordingly, the member 35 is above and to the left of the bottom of arm 34. As dis closed in my co-pending application the motor 5 comprises large and small cylinders 37 and 37 within which positively connected pistons 38 and 39 reciprocate. Pressure is continuously admitted to the right hand side of the piston 39 to release the clamping mechanism but when the clamping mechanism is operative said pressure is overcome by the pressure acting on the' left hand side of the large piston 38. It should be noted however that in another position oi the arm 34 and accordingly the valve 12, port 16 isconnected by means of a suitable passage with a port 40 communicating with the large cylinder bore 37 and through which live fluid is passed to act upon and force the piston 38 against the pressure on piston 39 over to the other end-ofits stroke. When the'lever 33 is depressed, it can only move a certain distance, namely, until the arm 34 thereof collides with the member 35 and during this movement the valve 12 is permitted to move only to a sufficient degree to fully open the port 16 leading to the clamping mechanism. Accordingly, further movement is impossible until the clamp is closed and the valve cannot be moved so far as to start the dolly motor by the admission of fluid to the port 17 until after the drill steel which is to be operated upon by the dolly is securelyclamped by the clamping mechanism. Itwill thus be seen that danger of injury, due to actuation of the dolly prior to the clamping of the steel-is avoided. It will be noted also that the valve chest is provided with an. upwardly extending chamber 40 which communicates with a chamber 41 in which the valve 42 is located and which conducts the supply of air to the holc opening pinning mechanism 43. I

While I have in this application specifically described one form which. my invention may assume in practiee,-it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is 1. In a forging machine having a plurality ofmechanisms,means for sequentially controlling said. mechanisms to efl'ectoperation thereof in a fixed predetermined order including an actuating lever and means'for controlling movement thereof directly engaging the same, said controlling means be ing movable with respect to the lever and be ing engageable therebyonly in some of their relative positions. 7 j

2. In a forging machine having a plurality of cooperating fluid-operated mechas nisms, a fluid controlling valve, and means for sequentially controlling said mechanisms to effect-operation thereof in a fixed predetermined order including an actuating lever for said valve and means for controlling controlling the operation of the same in a fixed predetermined order including a lever and means for preventing movement of said lever directly engaging the lever in one position of said meansbut not in another, said controlling means during a the length oftime of the initial operation of i one of said elements.

5. A forging machine having a plu-. rality of work-performing elements, and

means for controlling the same in a fixed predetermin'ed'order includ ng a lever hav-" ing an arm which has an immovable relation to said lever, and means carried by one of said elements and movable therewith for directly engaging said arm to prevent movement thereof. I f

6. A forging machine having a plurality of movable work-performing elements, and means for controlling the samein-a fixed predetermined order including a lever and a plurality of elements carried directly and solely by said lever and by certainof said work-performing elements respectively and having relative movement, said elements cooperating directly to prevent lever movement.

7. The combination with a forging machine having power-actuated work-performing means, a movable member for controlling power therefor, and a lever for controlling movement of said member, of means for controlling movement of-said lever including relatively movable cooperating parts carried directly and solely by the lever and work-performing means respectively, said member, lever and parts being disposed in a single plane.

8. In a forging machine, a plurality of fluid-operated elements, means for sequentially operating the same in a fixed predetermined order including a valve adapted to have a plurality of positions, a lever for controlling the same having a portion providing a surface angularly disposed to the longitudinal axis of said lever, and a member adapted to engage said surface when said valve is in its first position but not when said valve is in a predetermined subsequen position. I

9. In a forging machine having a movable power-moved work-performing element, means carried thereby providing a controlling surface, and controlling means for said clement including a controlling member having a fixed pivot and adapted to have its pivotal movement limited by its direct engagement with said surface during movement of said element.

10. A forging machine having work-performing means including a power-movable element, abutment means carried by said element, and controlling means for said element including a movable controlling member having a fixed pivot and having its movement limited by its direct engagement with said abutment means during certain stages of movement of said element.

11. A forging machine having work-performing means including a power reciprocable element, abutment means carried directly thereby, and" controlling means for said element including a contro ling member having a fixed pivot and engaging said abutment means directly during certain stages of movement of said element and moving across the path of movementfof' said abutment during other stages.

12. In a forging machine, a power mov-' able element having a controlling surface as sociated therewith, and means for controlling said element including a controlling member adapted to engage said surface directly and having a fixed pivoting point, said member being adapted to be swung about its fixed pivot in an arcuate path transversely of the path of movement of said surface.

13. In a forging machine, a plurality of power-operable mechanisms, means for controlling operation of the same in a fixed predetermined order including a member movable substantially in a straight path, and a second member having a fixed pivot to allow direct engagement with said first member when the latter is at one end of its path but not at the other end thereof, and means whereby said engagement prevents operation of one of said mechanisms.

14. In a forging machine having a plurality of fluid-operated elements, a valve mechanism for controlling the same comprising a valve and a valve chamber into which there open directly a plurality of ports, certain of said ports being adapted. to be wholly closed by said Valve while the remainder is adapted to be always in com-' munication with a source of live pressure fluid throu h said chamber, certain of said open and c osed ports being in communication with said fluid-operated mechanisms.

15. In a forging machine having a plurality of fluid-operated elements,-and means for controlling fluid flow to said elements including means whereby one of said elements is continuously supplied with live pressure fluid acting thereon invariably in one direction as long as fluid is supplied to said forging machine, and means for controlling fluid flow to another of said elements from the line which communicates with the continuously supplied element.

16. In a forging machine comprising a plurality of fluid-operated elements, means for continuously supplying one of the same with live pressure fluid acting thereon invariably in one direction as long as fluid is supplied to said forging machine, and means for supplying another of said elements with pressure fluid from the line which communicates with said first-mentioned element, said latter means comprising a valve housing having a plurality of chambers and a transverse partition therein, and a valve controlling fluid flow through said partition.

17. In a forging machine comprising a plurality of fluid-operated elements, means for continuouslysupplying one of the same with live pressure fluid aoting thereon invariably in one direot-ion' as long as fluid is supplied to said forging machine, and means for supplying another of said elements With pressure fluid froIn -the line which communicates With said other elementfsaid latter means comprising a valve housing having a plurality of chambers and a transverse partition therein, a valve controlling the flow of fluid through said partition, and a footcontrolled lever forcontrolling said valve.

In testimony whereof I aflix my signature.

FRANK AJHALLECK. 

